This AC charger is designed exclusively for charging you Tamiya LF-6.6V Batteries. Utilizing the AC100V outlet as an electrical source, this charger uses an individual switch for procedure and features safe and secure charging of batteries. Charging progress and mistakes is checked through the Light-emitting Diode indicator to protect the charger and battery pack. This charger will charge Tamiya LF2200-6.6V Racing Pack in about 70 mins and LF1100-6.6V Racing Pack (M-size) in about 35 mins.